GHC

From HaskellWiki

1 Documentation

The documentation below relates to using GHC. For documentation about GHC's internals and building GHC, head over to the GHC Developer Wiki.

These documents relate to the latest released version of GHC.
For earlier released versions click the relevant version on the
downloads page.
For release candidates, look at
the GHC download directory.

2 Collaborative documentation

GHC is a big system. We try to document the core functionality (above), but
you can help by writing documentation yourself. This section collects
documentation written in a collaborative way, by users and developers together.
Please help by adding new sections, and by clarifying and improving existing ones.